﻿#include "uart_mbus.h"

static const uint16_t crc16tab[256] = {
    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
    0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
    0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
    0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
    0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
    0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
    0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
    0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
    0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
    0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
    0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
    0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
    0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
    0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
    0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
    0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
    0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
    0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
    0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
    0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
    0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
    0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
    0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
    0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
    0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
    0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
    0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
    0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
    0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
    0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
    0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
    0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0};

static uint16_t crc16(uint8_t *buf, uint32_t len)
{
    uint16_t crc = 0;
    for (uint32_t count = 0; count < len; count++)
    {
        crc = (crc << 8) ^ crc16tab[((crc >> 8) ^ *buf++) & 0x00FF];
    }
    return crc;
}

UartMbus::UartMbus()
{
    inicpp::IniManager Interface_ini("../config.ini");
    m_sid = Interface_ini["uartmbus"].toInt("m_sid");
    m_uart.RxTxThreadStart();
}

UartMbus::~UartMbus()
{
}

uint8_t UartMbus::getack()
{
    uint8_t data[4] = {0};
    for (uint8_t i = 0; i < 100; i++)
    {
        if (m_uart.Receive(data, 4) == 4)
        {
            break;
        }
        if (i == 99)
        {
            std::cout << "getack timeout" << std::endl;
            return 0;
        }
        std::this_thread::sleep_for(std::chrono::milliseconds(10));
    }
    uint16_t crc = (uint16_t)(data[2] << 8) + data[3];
    if (crc == crc16(data, 2))
    {
        if ((data[0] == m_sid) && (data[1] == ACK))
        {
            std::cout << "get ack" << std::endl;
            return 1;
        }
        else if ((data[0] == m_sid) && (data[1] == NAK))
        {
            std::cout << "get nak" << std::endl;
            return 2;
        }
        else
        {
            std::cout << "get error" << std::endl;
            return 0;
        }
    }
    else
    {
        std::cout << "crc16 error" << std::endl;
        return 0;
    }
}

uint8_t UartMbus::ping()
{
    uint8_t data[4] = {0};
    data[0] = m_sid;
    data[1] = ENQ;
    uint16_t crc = crc16(data, 2);
    data[2] = (crc >> 8) & 0xFF;
    data[3] = crc & 0xFF;
    if (m_uart.Transmit(data, 4) == 4)
    {
        std::cout << "ping ..." << std::endl;
    }
    return getack();
}

uint8_t UartMbus::update(uint8_t *pdata, uint32_t len)
{
    uint8_t data[13] = {0};
    data[0] = m_sid;
    data[1] = DAT;
    uint32_t count = len / 8;
    uint32_t remainder = len % 8;
    for (int32_t i = 0; i < count; i++)
    {
        data[2] = 0x8;
        for (uint8_t j = 0; j < 8; j++)
        {
            data[3 + j] = *pdata;
            pdata++;
        }
        uint16_t crc = crc16(&data[0], 11);
        data[11] = (crc >> 8) & 0xFF;
        data[12] = crc & 0xFF;
        if (m_uart.Transmit(data, 13) == 13)
        {
            std::cout << "updateing ..." << std::endl;
        }
        if (getack() == 0)
        {
            std::cout << "update error" << std::endl;
            return 0;
        }
    }
    for (uint8_t i = 3; i < 12; i++)
    {
        data[i] = 0;
    }
    if (remainder != 0)
    {
        data[2] = remainder;
        for (uint8_t j = 0; j < remainder; j++)
        {
            data[3 + j] = *pdata;
            pdata++;
        }
        uint16_t crc = crc16(&data[0], 11);
        data[11] = (crc >> 8) & 0xFF;
        data[12] = crc & 0xFF;
        if (m_uart.Transmit(data, 13) == 13)
        {
            std::cout << "updateing ..." << std::endl;
        }
        if (getack() == 0)
        {
            std::cout << "update error" << std::endl;
            return 0;
        }
    }
    return 1;
}

uint8_t UartMbus::version()
{
    inicpp::IniManager Interface_ini("../config.ini");
    int major = Interface_ini["file"].toInt("major");
    int minor = Interface_ini["file"].toInt("minor");
    uint8_t data[6] = {0};
    data[0] = m_sid;
    data[1] = VER;
    data[2] = major & 0xFF;
    data[3] = minor & 0xFF;
    uint16_t crc = crc16(data, 4);
    data[4] = (crc >> 8) & 0xFF;
    data[5] = crc & 0xFF;
    if (m_uart.Transmit(data, 6) == 6)
    {
        std::cout << "setting version ..." << std::endl;
    }
    return getack();
}

uint8_t UartMbus::jump2app()
{
    uint8_t data[4] = {0};
    data[0] = m_sid;
    data[1] = RUN;
    uint16_t crc = crc16(data, 2);
    data[2] = (crc >> 8) & 0xFF;
    data[3] = crc & 0xFF;
    if (m_uart.Transmit(data, 4) == 4)
    {
        std::cout << "jumping ..." << std::endl;
    }
    return getack();
}